Spine
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Retrospective cohort study. ⋯ 3.
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Retrospective study. ⋯ 4.
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Randomized Controlled Trial
Does Systemic Administration of Parathyroid Hormone After Noninstrumented Spinal Fusion Surgery Improve Fusion Rates and Fusion Mass in Elderly Patients Compared to Placebo in Patients With Degenerative Lumbar Spondylolisthesis?
Prospective, randomized, double-blinded, placebo-controlled clinical trial. ⋯ 1.
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A retrospective study. ⋯ 3.